Trying to code backward euler?

1 次查看（过去 30 天）
Brady Retzlaff
Brady Retzlaff 2015-11-24
I am trying to write a code to compute the backward euler approximation of a differential equation. the ODE is dy/dx = -y(x)
so my code looks like
for k = 1:((T/dt)-1)
xb(k+1) = xb(k)+dt;
yb(k+1) = yb(k) + dt*f(yb(k+1),xb(k+1));
end
My problem is that using my equation i am trying to use yb(k+1) to compute itself, which obviously doesnt work, so i get an error 'index exceeds matrix dimension'. How should i resolve this?

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Ordinary Differential Equations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by